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qaws [65]
3 years ago
10

Solve the equation 1/4a=3

Mathematics
1 answer:
Tanzania [10]3 years ago
3 0

Answer:

a= 12

Step-by-step explanation:

(1/4)*a = 3 // - 3

(1/4)*a-3 = 0

1/4*a-3 = 0 // + 3

1/4*a = 3 // : 1/4

a = 3/1/4

a = 12

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A human heart beats approximately 60 times per minute. If a man lives to the age of 90, how many times will his heart in his lif
makkiz [27]

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90 Years = 47,304,000 Minutes = 47304000 Minutes.

Step-by-step explanation:

7 0
3 years ago
Mathematical Statistics with Applications Help Homework
Mars2501 [29]

7.43: Let X denote the random variable for height and \overline X for the sample mean. Then if \mu is the mean of

So the probability that the difference between the sample and population means does not exceed 0.5 inch is

P(|\overline X-\mu|\le0.5) = P\left(\left|\dfrac{\overline X-\mu}{0.25}\right|\le\dfrac{0.5}{0.25}\right) = P(|Z|\le 2) \approx \boxed{0.95}

per the empirical or 68/95/99.7 rule.

7.44: For a sample of size <em>n</em>, the sample standard deviation would be \frac{2.5}{\sqrt n}. We want to find <em>n</em> such that

P(|\overline X-\mu| < 0.4) = 0.95

Comparing to the equation from the previous part, this means we would need

\dfrac{0.4}{\frac{2.5}{\sqrt{n}}} = 0.16\sqrt n = 2 \implies \sqrt n = 12.5 \implies n = 156.25

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7 0
3 years ago
What is the product 3x5(2x2+4x+1)
lesya692 [45]

Answer:

6x^7+12x^6+3x^5

Step-by-step explanation:

The given expression is:

3x^5(2x^2+4x+1)

We expand the parenthesis using the distributive property to obtain;

3x^5(2x^2)+3x^5(4x)+3x^5(1)

Recall that;

a^m\imes a^n=a^{m+n}

We apply this property and multiply out the constant terms to obtain;

6x^7+12x^6+3x^5

3 0
3 years ago
Need help on this I don't get it
Nataly [62]

Step-by-step explanation:

It is not a solution because the point falls outside the shaded region, if you were to plugin the point it would return a false statement

4 0
2 years ago
Volume of a cube is 343cm³ . Then the total surface area of the cube is _______ cm². *
MissTica

Answer:

A≈294cm²

-hope this helped

8 0
3 years ago
Read 2 more answers
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